SA Supplements Vol 63 Issue 1635supp

SA Supplements

Volume 63, Issue 1635supp

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Features

The Tin-Mining Industry of Cornwall

By the English Correspondent of Scientific American

International Commerce of the World and Share of the United States Therein

The use of Alcohol and Gasoline in Farm Engines

Elementary Engine Mechanism

C. E. Lucke, S. M. Woodward

Hardening Steel by Electricity

Electric Effects Produced by Light

Petroleum and its Refinement

Charles E. Munroe

Illumination as Affecting the Eye

Wendell Reber

The World's Greatest Gambling House—Lloyd's

Photographing Lightning with a Moving Camera

Alex Larsen

A New Galvanoplastic Process

A. Breydell

The Theory of Mountain making

Engineering Notes

Science Notes

Trade Notes and Formulæ